Maturity Profile (As of Quarter Ended 03/31/2016)

As of Quarter Ended 03/31/2016

Duration (As of Quarter Ended 03/31/2016)

As of Quarter Ended 03/31/2016

Duration

Harbor Unconstrained Bond Fund %

0-1 yr

90.7

1-3 yr

109.0

3-5 yr

-221.1

5-7 yr

-109.9

7-10 yr

60.4

10-20 yr

-18.8

20-30 yr

189.6

Over 30 yr

0.0

This information should not be considered as a recommendation to purchase or sell a particular security and the holdings, sectors or countries mentioned may change at any time and may not represent current or future investments.

The Barclays U.S. Aggregate Bond Index is an unmanaged index of investment-grade fixed-rate debt issues with maturities of at least one year. This unmanaged index does not reflect fees and expenses and is not available for direct investment.

The BofA Merrill Lynch US Dollar 3-Month LIBOR Constant Maturity Index tracks the performance of a synthetic asset paying Libor to a stated maturity. The index is based on the assumed purchase at par of a synthetic instrument having exactly its stated maturity and with a coupon equal to that day's fixing rate. That issue is assumed to be sold the following business day (priced at a yield equal to the current day fixing rate) and rolled into a new instrument.

Investors should carefully consider the investment objectives, risks, charges and expenses of a Harbor fund before investing. To obtain a summary prospectus or prospectus for this and other information, visit harborfunds.com or call 800-422-1050. Read it carefully before investing.

All trademarks or product names mentioned herein are the property of their respective owners.